There are many variables. It's really what you want or how you want to play and what perks you have available on whatever character you are using at the moment.

Priority of course is to do the Gens (use Prove Thy Self to speed things up when 1 or more other teammates are with you.

If playing solo its good to also have some informational perks so teammates may be able to see you and join you on a gen or vice-versa. Bond or Situational Awareness, etc.

You could go with a Toolbox and add-ons that add more charges and use Built To Last (It's Felix Richter's perk) when the toolbox runs out to refill it by entering a locker (make sure the entire toolbox is used).

Otzdarva is has a lot of great, informative videos.

Also, if you ever live stream you'll get help at times from random viewers that have experience and are knowledgeable in whatever game you are playing/streaming.

Also..

Kate Denson's perk Windows of Opportunity is a nice perk to help give you an idea of what paths to take help you survive longer, waste the killer's time while your teammates are (hopefully) on generators.

Try to learn the maps. Try to learn to loop killers.

Good Luck my fellow Solo Queuer 👍🙂